diff -r 2c5162224003 -r fdb31ab341af mpdata/src/mpcollectiontbonelistdatamodel.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpdata/src/mpcollectiontbonelistdatamodel.cpp	Fri May 14 18:54:37 2010 -0500
@@ -0,0 +1,132 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Music Player secondary collection abstract data model. This is
+*              primarily used to support Mediawall in Collection View. This
+*              model represents the list containing album songs.
+*
+*/
+
+#include <hbnamespace.h>
+
+#include "mpcollectiontbonelistdatamodel.h"
+#include "mpmpxcollectiondata.h"
+#include "mptrace.h"
+
+/*!
+    \class MpCollectionTBoneListDataModel
+    \brief Music Player collection data model.
+
+    Secondary collection data model implements the interface specified by
+    QAbstractListModel, which defines the standard interface that item models
+    must use to be able to interoperate with other components in the model/view
+    architecture.
+
+    Every item of data that can be accessed via a model has an associated model
+    index.
+
+    Each item has a number of data elements associated with it and they can be
+    retrieved by specifying a role (see Qt::ItemDataRole) to the model's data
+    returned by itemData() function.
+
+    MpCollectionTBoneListDataModel is primarily used to support Mediawall in
+    Collection View. This model represents the list containing album songs.
+
+    \sa QAbstractListModel
+*/
+
+/*!
+    \fn void albumDataChanged()
+
+    This signal is specific to views with TBone. This signal is emitted when
+    a new data set is available for the list section of the TBone. Currently,
+    the only operation that can trigger this is the delete operation.
+ */
+
+/*!
+ Constructs the collection data model.
+ */
+MpCollectionTBoneListDataModel::MpCollectionTBoneListDataModel( MpMpxCollectionData *data, QObject *parent )
+    : QAbstractListModel(parent),
+      mCollectionData(data),
+      mRowCount(0)
+{
+    TX_ENTRY
+    connect( mCollectionData, SIGNAL(refreshAlbumSongs()),
+             this, SLOT(refreshModel()) );
+    connect( mCollectionData, SIGNAL(albumDataChanged()),
+             this, SIGNAL(albumDataChanged()) );
+    TX_EXIT
+}
+
+/*!
+ Destructs the collection data model.
+ */
+MpCollectionTBoneListDataModel::~MpCollectionTBoneListDataModel()
+{
+    TX_LOG
+}
+
+/*!
+ Returns the number of rows under the given \a parent.
+
+ \reimp
+ */
+int MpCollectionTBoneListDataModel::rowCount( const QModelIndex &parent ) const
+{
+    TX_LOG
+    Q_UNUSED(parent);
+    return mRowCount;
+}
+
+/*!
+ Returns the data stored for the item referred to by the \a index.
+
+ \reimp
+ */
+QVariant MpCollectionTBoneListDataModel::data(const QModelIndex &index, int role) const
+{
+    TX_ENTRY
+    QVariant returnValue = QVariant();
+    if ( !index.isValid() ) {
+        return returnValue;
+    }
+
+    int row = index.row();
+    TX_LOG_ARGS("index=" << row << ", role=" << role);
+    if ( role == Qt::DisplayRole ) {
+        // Fetch the primary text, which is the title, if available.
+        QString songTitle = mCollectionData->albumSongData(row, MpMpxCollectionData::Title);
+        if ( !songTitle.isEmpty() ) {
+            returnValue = songTitle;
+        }
+        else {
+            returnValue = hbTrId("txt_mus_other_unknown4");
+        }
+    }
+    TX_EXIT
+    return returnValue;
+}
+
+/*!
+ Slot to be called when data has changed and model needs to be refreshed
+ to reflect the new data.
+ */
+void MpCollectionTBoneListDataModel::refreshModel()
+{
+    TX_ENTRY
+    mRowCount = mCollectionData->albumSongsCount();
+    reset();
+    TX_EXIT
+}
+